In this work, LaFeO nanoparticles were fabricated by a facile sol-gel method and applied to degrade tetracycline hydrochloride (TC-HCl) through heterogeneous activation of persulfate under visible-light illumination. The structure, compositions, photocatalytic properties, and morphological features of the as-obtained sample were investigated by XRD, XPS, DRS, and FESEM techniques. Optimizations of dosage of LaFeO (0-0.4 g/L), dosage of PS (0-4 g/L), concentration of TC-HCl (10 ppm-80 ppm), and pH of initial solution (2.09-9.59) were conducted. Radical trapping experiments indicated that SO was the dominant radical for TC-HCl removal while OH was also involved. In addition, LaFeO was proved with excellent stability and reusability in degrading TC-HCl molecules in the Vis/LaFeO/PS system. The findings of this work revealed the potential application of the Vis/LaFeO/PS system toward degrading organic pollutants in wastewater.
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| http://dx.doi.org/10.1016/j.ecoenv.2020.110661 | DOI Listing |
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